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Finding the Fourth Proportional to 7,172.89, 9,895.83 and 5,288.95

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Solution

The fourth proportional to 7,172.89, 9,895.83 and 5,288.95 is: 7,296.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172.89 : 9,895.83 = 5,288.95 : x
  2. Step 2: Convert to fraction form
    7,172.89/9,895.83 = 5,288.95/x
  3. Step 3: Cross multiply
    7,172.89x = 9,895.83 × 5,288.95
  4. Step 4: Simplify right side
    7,172.89x = 52,338,550.08
  5. Step 5: Solve for x
    x = 52,338,550.08/7,172.89
  6. Step 6: Final answer
    x = 7,296.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.